| 分数阶时滞系统的频域子空间辨识 |
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| 引用本文： | 李旺,彭程,王永.分数阶时滞系统的频域子空间辨识[J].信息与控制,2011,40(2). |
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| 作者姓名： | 李旺 彭程 王永 |
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| 作者单位： | 中国科学技术大学自动化系,安徽合肥,230027 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 研究了利用频率响应数据辨识分数阶时滞系统子空间模型的问题,给出了一种差分进化算法与频域子空间方法相结合的辨识算法.利用差分进化算法搜索最优分数微分阶次和时滞参数,而对于固定的分数微分阶次和时滞,则采用分数阶频域子空间辨识方法得到状态空间模型.通过仿真算例验证了该算法的有效性.
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| 关 键 词： | 分数阶时滞系统 频域辨识 差分进化 子空间方法 |
Frequency Domain Subspace Identification of Fractional Order Time-Delay System |
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| LI Wang,PENG Cheng,WANG Yong.Frequency Domain Subspace Identification of Fractional Order Time-Delay System[J].Information and Control,2011,40(2). |
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| Authors: | LI Wang PENG Cheng WANG Yong |
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| Affiliation: | LI Wang,PENG Cheng,WANG Yong (Department of Automation,University of Science and Technology of China,Hefei 230027,China) |
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| Abstract: | The subspace identification problem of fractional order time-delay system using frequency responses is studied. A new identification method,which combines the differential evolution(DE) algorithm and subspace method in frequency domain,is presented.The DE algorithm is used to search the optimal fractional differential order and time delay parameters. While,for fixed fractional differential order and time delay,subspace method is applied to obtaining the state space model. The efficiency of the new algorithm... |
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| Keywords: | fractional order time delay system frequency domain identification differential evolution subspace method |
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